What was found
DURING ROUTINE C-CHECK INSPECTION, RT RUDDER EXTERNAL SKIN CORRODED, STA ZR 276.531. PERFORMED MAJOR REPAIR. REMOVED CORROSION IAW DC-8 SRM 51-1-8 PAGES 17-18. FOUND OUT OF LIMITS IAW DC-8 SRM 55-2-0 PAGE 12. REMOVED CORRODED PANEL PLATING IAW DC-8 SRM 55-1-0, DC-8 SRM 51-1-21. FABRICATED NEW PANEL PLATING + BONDED FINGER DOUBLER (ALCLAD 7075 T6 0.016) IAW DC-8 SRM 55-6-1 FIG 1 ITEM A. BONDED BOTH PARTS WITH HYSOL IAW DC-8 SRM 51-1-9. CLEANED, TREATED AND PRIMED AREA + NEW PANEL PLATING IAW DC-8 SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW DC-8 SRM 51-1-11. INSTALLED NEW PANEL PLATING IAW DC-8 SRM 51-1-21, DC-8 SRM 51-3-0, DC-8 SRM 51-3-1 (TORQUE) REFER TO N/R 2849 FOR BALANCING.